baber/WOPTO huggingface dataset:
Patent GB-1382724-A (GB)
Title: Cobalt powders their preparation and use
IPC: H01F1/06
Filed: 1972-03-24
Abstract: 1382724 Coated particles GRAHAM MAGNETICS INC 24 March 1972 [24 March 1971 22 Feb 1972] 14076/72 Heading B2E [Also in Division C7] A dry, powder-like coated composition consists essentially of (a) acicular crystalline metal salt particles in which the metal is Co alone or together with not more than 57% by weight of Ni or Fe, the salt particles having a length to diameter ratio of at least 1.5:1, and being reducible to metal by hydrogen at raised temperatures, and (b) from 1 to 15% of the weight of the salt particles of a thermally decomposable organic polymeric material coating the surfaces of the particles. From such materials ferromagnetic acicular metal particles having a squareness greater than 0.35, a magnetic coencivity of at least 400 oersteds and a segina value above 50 e.m.u./g may be prepared by reduction at 325 to 410C. The coating may consist of a polyamide, a silicone polymer, an epoxy resin, a polyacrylic resin or a polyurethane. Usually the coating is applied in a suitable solvent to ensure complete coverage of the salt particles. Examples describe the preparation of acicular particles from cobalt oxalate, Fe-Co particles from mixed hydroxides and Ni-Co particles from mixed oxalates.
Patent GB-434373-A (GB)
Title: Improvements in or relating to conveyors
IPC: A21C9/08
Filed: 1934-05-10
Abstract: 434,373. Endless-belt conveyers. VICARS, Ltd., T. & T., and NAYLOR, J. F., Earlestown, Newton-le-Willows, Lancashire. May 10, 1934, No. 14087. [Class 78 (i)] [See also Group V] A fripping receiving conveyer 1 moving continuously in one direction transfers flat objects 6 on to a delivery conveyer 10 moving intermittently or continuously in an opposite direction by means of an intermediate fripping conveyer 8 which moves alternately forward and backward. The contiguous ends of the conveyers 1 and 8 are carried by a reciprocating block 5, and the fripping end of the conveyer 8 is raised or lowered by a cam &c. which moves the fripping knife 11 in vertical guides. When the conveyers 1 and 8 are moving in the same direction and their fripping ends moving together in a reverse direction, the knife 11 is raised and the objects 6 are transferred from conveyer 1 to conveyer 8. When the fripping ends begin to return, the direction of motion of the conveyer 8 is reversed and the knife 11 lowered, thus depositing the objects on the conveyer 10. The conveyer 10 may have pans to receive the objects, which may be deposited in spaced groups by charges in the relative speeds of conveyers 8 and 10. Weighted pulleys 4 and 9 tension the conveyers 1 and 8. In a modification, the knife 11 is not vertically movable, and is positioned so that the fripping end of the conveyer 8 is slightly below that of the conveyer 1.
Patent GB-559504-A (GB)
Title: Improvements in or relating to pneumatic operating devices
IPC: B66F3/24
Filed: 1942-10-09
Abstract: 559,504. Fluid pressure servomotors. BRITISH THERMOSTAT CO., Ltd., BUSH, E. J., and EASTAUGH, W. C. Oct. 9, 1942, No. 14201. [Class 135] A power device controlled by pressure or temperature and particularly adapted for operating a radiator flap or cooler shutter on an aircraft engine cooling system comprises a double-acting piston 2 operated by compressed air under the control of four solenoid-actuated lift valves arranged in pairs to connect one end of the cylinder to pressure while the other end is connected to atmosphere. The solenoids are controlled by a switch comprising a pair of contacts 23, 24 carried by a member 21 slidable in a liner 22 to cooperate with an intermediate contact 27 carried by a bell-crank lever the free end of which rests on a stepped rod 33 carried by the piston to give a step-by-step follow-up action. In the form shown, the member 21 is operated by a rod 16 secured to the closed end of a bellows 8. The open end of the bellows is fixed to a plate 9. forming a closure for the chamber housing the bellows and provided with a passage 11 leading by way of a capillary tube 12 to a thermal feeler. According to the Provisional Specification a diaphragm may replace the bellows and a conical member may replace the stepped rod.
Patent GB-978734-A (GB)
Title: Improvements in and relating to articles of boron nitride
IPC: C04B35/58
Filed: 1963-04-10
Abstract: A sintered boron nitride refractory body is made by hot pressing a powder mixture comprising 2-10% by weight of the boron nitride of a fluoride of Ca, Ba, Sr or of a fluoride of a rare earth metal, or of a chloride of an alkaline earth metal or of a rare earth metal, 0-80% by weight of titanium boride and the balance boron nitride.  The powders, preferably minus 200 mesh, are mixed and hot pressed at 1600-2100  DEG C.  Several examples of different compositions are given and also the mechanical strengths of the hot pressed articles.
Patent GB-727745-A (GB)
Title: Copper-containing polyazo dyestuffs and a process for their manufacture
Filed: 1952-06-06
Abstract: The invention comprises copper-containing polyazo dyestuffs of formula in copper-free state <FORM:0727745/IV (c)/1> where Y is an OH group in o position to -azo-, X is H, OH, NH2, acylamino, alkylamino or arylamino, n is 1 or 2, R is H, alkyl or a radicle of the benzene series and aryl is a radicle of the benzene or naphthalene series in which the o positions to -N = N- are free from COOH groups.  They are made by coupling 1 mol. of tetrazotized 4,41-diamino-3,31-dialkoxy-1,11-diphenyl with 1 mol. of the appropriate hydroxynaphthalene sulphonic acid and 1 mol. of the desired monoazodyestuff and treating the dyestuff thus obtained with copper-yielding substances.  Coupling is preferably effected in an alkaline medium and is accelerated with pyridine. Coppering is effected in conventional fashion, e.g. by heating with cuprammonium hydroxide in a weakly alkaline medium optionally in the presence of organic bases or by fusion of alkali salts of lower aliphatic carboxylic acids with copper salts. 3,31-Dimethoxy and -diethoxy substituted diphenyls are specified.  Hydroxynaphthalene sulphonic acids specified are 1-hydroxynaphthalene - 4 - and - 5 - mono - and - 3,6 - and - 3,8-disulphonic acids, 2-hydroxynaphthalene-4-, -6-and -7-mono- and -3,6-, -3,8- and -6,8-disulphonic acids, 1,8-dihydroxynaphthalene-3,6-disulphonic acid, 1-hydroxy-6-amino-, -N-acetylamino-, -N-benzoylamino-, -N-phenylamino-, -7-amino-, -N-phenylamino-and -7-N-acetylamino-naphthalene - 3 - sulphonic acid, 1 - hydroxy-8- and -7-amino- and -N-acetylamino-3,6-disulphonic acid, 1-hydroxy-8-amino- and -8-N-acetylamino-naphthalene-5,7-disulphonic acid, 1 - hydroxy - 8 - N - acetylamino - naphthalene-2,4 - disulphonic acid and 1 - hydroxy - 8-aminonaphthalene - 5 - sulphonic acid.  The monoazo dyestuffs used as starting materials are made by treating an aromatic amine, those specified being aniline and its -2-, -3- or -4-mono- and -2,5-di-sulphonic acids, 1-amino-2-, -3- or -4-chloro-, methyl- or methoxy-benzene, 1-amino-naphthalene and its -4-, -5-, -6- and -7-mono- and -3,6-, -3,8- and -4,8-disulphonic acid and 2-aminonaphthalene and its -1- and -6-mono- and -3,6-, -4,8-, -5,7- and -6,8-di-sulphonic acid, in an acid medium in the presence of a salt of a low molecular fatty acid with the necessary hydroxynaphthalene sulphonic acid where R is H or alkyl, e.g. Me or Et, or a radicle of the benzene series, e.g. phenyl, 2-, 3- or 4-methyl-, methoxy- or chlorophenyl, 3- or 4-sulpho- or carboxy-phenyl or 4-hydroxy-3-carboxyphenyl.  The dyestuffs dye cellulosic fibres in vivid blue to navy-blue shades. Examples are provided illustrating the preparation of dyestuffs using certain of the above components.
Patent GB-948188-A (GB)
Title: Process for the manufacture of 1.4-diene-3-keto-steroids and new 1.4-diene-3-keto-steroids
IPC: C12P33/02
Filed: 1961-04-20
Abstract: The invention comprises 16a -methyl -1, 4-pregnadiene -11b , 17a - diol -3, 20-dione, 16a -methyl-1, 4- pregnadiene -11b , 21-diol- 3, 20-dione, 1, 4-pregnadiene -6b , 17a , 21-triol- 3, 20-dione 1, 4-pregnadiene-12b , 17a , 21-triol-3, 20-dione and a process for the manufacture of 1, 4-diene -3- ketosteroids by treating a perhydrocyclopentenophenanthrene compound saturated in 1, 2-position which contains at least one hydrogen atom on each of the carbon atoms 1 and 2 and may contain two such atoms on each, or one on one carbon atom and two on the other, and which further contains an oxygen function on the carbon atom 3, together with a double bond between carbon atoms 4 and 5 or 5 and 6 and may contain one or more further double bonds in other positions in the steroid molecule and/or the carbon atom 10 a methyl or a free or functionally converted hydroxyl group and/or a substituent attached to one or other carbon atoms of the steroid molecule, with a culture of the microorganism Bacillus lentus MB 284 or an enzyme isolated therefrom.  Said microorganism is obtained from a strain of the species Bacillus lentus of the genus Bacillus and the family Bacillaceac by ultra-violet irradiation.
Patent GB-890811-A (GB)
Title: Wet process for phosphoric acid manufacture
Inventor: SVANOE HANS
IPC: C01B25/22
Filed: 1959-04-28
Abstract: <PICT:0890811/III/1> Phosphoric acid, or alkali metal, or ammonium, phosphate is prepared by forming an aqueous solution of calcium phosphate, mixing a precipitant with the solution to form a supersaturated solution of a calcium compound, crystallizing the calcium compound in a suspension thereof, controlling the temperature of the suspension by withdrawing a portion of the mother liquor of the suspension, cooling, and returning to the suspension, and separating the calcium compound from the suspension to leave a solution of phosphoric acid, or phosphate.  The aqueous solution of the calcium phosphate may be obtained by digesting rock phosphate with phosphoric acid, or nitric acid.  Precipitants may be H2SO4, or alkali metal, e.g. Na or K, or ammonium, sulphates.  Ground rock phosphate is digested in 3 at 75-90 DEG C. with excess H3PO4 with stirring.  The resulting solution is added, through 12, to a portion of mother liquor, from the suspension in crystallizer 15, circulating through 7, 8 by pump 10.  H2SO4 of at least 30% strength is added at 9 so that the solution in 7, 8 is supersaturated with CaSO4, e.g. to the extent of 0,5-5 grms./l.  A portion of mother liquor is withdrawn by pump 14 to vacuum evaporator 19 to effect cooling and concentration, the heat of vapourization of the water removed being equivalent to the heat developed in the mother liquor in 7 by addition of H2SO4 and aqueous solution thereto.  The liquor cooled 2-5 DEG C. is returned at 20 to the supersaturated solution for return to the suspension in 15, which is at 65-85 DEG C.  CaSO4 crystals are withdrawn at 13 and mother liquor separated on filter 17 is passed to 18, whence H3PO4 is recovered as product, and is returned to digester 3.
Patent GB-1030179-A (GB)
Title: A method of manufacturing a silicon transistor
IPC: H01L21/205
Filed: 1965-04-05
Abstract: 1,030,179. Semi-conductor devices. FUJITSU Ltd. April 5, 1965 [April 3, 1964], No. 14430/65. Heading H1K. A silicon transistor for high-speed switching circuits is made in which the resistivity and thickness of its epitaxially deposited base layer are so controlled as to produce a ratio between the punch-through voltage and the avalanche or Zener voltage in the range 0À5:1 to 1À5:1. In the example given the P-type collector layer is of 0À001 to 0À5 ohm cm. resistivity and the base layer is of 0À01-5 ohm cm. resistivity. Several emitter regions are diffused into a wafer of this structure, electrodes are provided, and the wafer masked and etched to produce several mesa transistors. The transistors may be used in high-frequency oscillators.
Patent GB-815871-A (GB)
Title: Water vapor impermeable paper board and process for producing same
Inventor: DELL M BENJAMIN
IPC: D21J1/00
Filed: 1957-05-07
Abstract: 815,871. Impermeable paper-board. PATENT & LICENSING CORPORATION. May 7, 1957, No. 14546/57. Class 96. A multiple-ply paper-board which is impermeable to water-vapour has on at least one of its plies a coating comprising a major proportion of petroleum wax, e.g. a microcrystalline wax melting at 180 ‹ F., and a minor proportion of a solid polymer, e.g. polyisobutene, polyethylene, or mixtures thereof, and kaolin or ball clay. A cationic surface-active agent, e.g. dodecylamine, dodecylaniline, undecylimidazoline, oleylaminodiethylamine, triethyl cetyl ammonium iodide, dimethylstearyl hydroxyethyl ammonium, dimethylphenyl benzyl ammonium chloride, polyethylene diamines and their quaternary ammonium derivatives, polypropanol polyethanolamines, octadecyl methylene pyridinium acetate, hydrochloride of dimethyl octadecyl methyl aminoacetate &c. may be included. The polyisobutene should have a molecular weight of 30,000 to 150,000, and the polyethylene 7,000 to 25,000. The coating may be applied by appliances generally used for application of bituminous emulsions to wet plies in a paper-making machine, e.g. using a wire-covered cylinder immersed in a bath at constant level.
Patent GB-1236736-A (GB)
Title: Improvements in or relating to coke ovens
Inventor: SCHON ERICH
IPC: C10B21/00
Filed: 1969-03-20
Abstract: 1,236,736. Utilizing coke oven gas. SIMONCARVES Ltd. 20 March 1969, No. 14581/69. Heading C5E. A method of operating a coke oven battery which is heated by the gas it produces, comprises dividing the crude gas into two streams S1, S2, using S1, after condensing water vapour and removing tar and ammonia to heat the ovens, and subjecting S2, optionally with the products removed from S1 to thermal treatment, e.g. a composition process, e.g. to raise steam, which may be used to distil ammoniacal liquor. S1 is preferably slightly greater in volume than required for heating the ovens the surplus, after purification, being added to S2. In an illustrated example there is described a plant in which the ammonia recovered, and optionally the tar, are burnt with S2, and phenol is recovered. The combustion process is operated at a temperature high enough to ensure that the products of combustion do not contain noxious compounds, and instead of steamraising, this process may be a cracking process, e.g. over a catalyst.
Patent GB-568030-A (GB)
Title: Improvements in ball for socket joints
IPC: F16C11/06
Filed: 1943-09-07
Abstract: 568,030. Ball and socket joints. BEAVON, A. W. Sept. 7, 1943, No. 14604. [Class 65 (ii)] In a ball-and-socket joint a ball 5 is sprung into position between cupped ears 4 of a bracket 1, and a rivet, pin or bolt 8 secures the ears at the correct distance apart, a hole 7 in the ball being provided. The ball arm 6 may swivel freely in a horizontal plane and through a limited angle in the vertical plane. The hole 7 may taper from each outer end towards the centre of the ball, and may be elongated.
Patent GB-441047-A (GB)
Title: Endless track device for conveying loads, particularly perambulators, over inclined surfaces, particularly stairs
IPC: B62B9/02
Filed: 1935-05-18
Abstract: 441,047. Endless - track vehicles. FETTVERSORGUNGS AKT.-GES., 8, Deichthorstrasse, Hamburg, Germany. May 18, 1935, No. 14617. Convention date, April 27. [Class 79 (i)] An endless-track device for conveying perambulators and other loads in a horizontal position up stairs or inclined surfaces comprises a lower endless-track frame 4 and an upper load-carrying frame 6 connected together by pairs of levers 9, 10 which can be collapsed or held by a locking device in their operative positions. In the construction shown in Figs. 2 and 6, tracks 3 pass over end pulleys 2 on the frame 4 and also over balls or rollers 5 mounted in channels in the underside of the frame. The perambulator or other load is secured to the upper frame 6 by adjustable devices 26, and the frame may have a telescopic adjustment. The frames are connected together by levers or links 9, 10 pivoted thereto, and the upper frame is secured in the raised position shown by means of an arm 11 pivoted to the base frame 3 and having a spring hook or other device adapted to engage the pivot shaft 12 of the link 10 to the frame 6. The arm 11 may be locked in the operative position by means of a stirrup 17. Rollers 24, larger than the end pulleys 2 of the tracks, are provided at one end of the base frame so that the device may be wheeled over level ground on these rollers alone. In the construction shown in Fig. 4, the upper ends of the links 9 slide in slots in the frame 6, the links 10 are formed as toggle links 14, 15, and the weight of the load on the upper frame 6 causes rollers 18 on this frame to bear on the upper run of the endless track and act as a brake.
Patent GB-887615-A (GB)
Title: Improvements in or relating to radio frequency reactance amplifiers
IPC: H03F7/00
Filed: 1960-04-27
Abstract: 887,615. Parametric amplifiers. TELEFUNKEN G.m.b.H. April 27, 1960 [April 30, 1959], No. 14757/60. Class 40 (9). In a parametric amplifier comprising a non- linear reactance R (e.g. a semi-conductor diode) a load La and condensers C1, C2 in parallel resonance circuits 1, 2 tuned to the signal and idling frequencies, the inductance and damping of the idling circuit are provided by impedance transformation. In Fig. 1, the coupling of the signal source G1 to the inductor L1 is variable to allow bandwith adjustment. The pump generator G2 is coupled to the idling circuit 2 by a transformer T. In Fig. 2, the individual circuits are constituted by parallel wire lines and are tuned by shorting stubs S1 S2, S3. Shorting stubs may also be used in an arrangement using coaxial lines.
Patent GB-1346716-A (GB)
Title: Fluid flow system
IPC: F16L19/04
Filed: 1972-03-29
Abstract: 1346716 Pipe couplings TENNECO Inc 29 March 1972 [5 May 1971] 14829/72 Heading F2G The connection between an exhaust pipe 5 and the outlet section 30 of an I.C. engine exhaust manifold includes a springy bi-conical annular enlargement formed in the pipe 5, which is clamped and resiliently compressed between complementary shaped surfaces, by bolts 35.
Patent GB-383960-A (GB)
Title: Improvements in sparking plugs
IPC: H01T13/54
Filed: 1931-05-20
Abstract: 383,960. Sparking-plugs. WELLER, J., Old Vine Cottage, West Horsley, Surrey. May 20, 1931, No. 14842. [Class 7 (iv).] The insulation B is seated directly in the cylinder wall A and retained by a gland C. The spark is formed between the terminal K and tube D forming part of the cylinder wall. The appropriate setting for the terminal K may be determined by a temporary housing placed on the insulation, or by an external contact G mounted on the outer end of the plug and movable into sparking relationship with the gland C.
Patent GB-475880-A (GB)
Title: Improved detergent
IPC: C11D3/386
Filed: 1936-05-27
Abstract: Soiled fabrics of silk, cotton or linen are cleansed by treating with an aqueous solution containing alkali and papain or bromelin.  In an example, a mixture of papain, soap, soda ash, and fused sodium polysulphide is dissolved in water, and the fabrics are treated therewith at 40 to 80 DEG  C., after which they are boiled in water which may contain soap, then rinsed and dried.  Animal enzymes, camphor, attar of roses, dextrin, sugar, or barytes may be added to the bath.  Specification 414,778 is referred to.  The Provisional Specification describes also the use of other vegetable proteases such as those obtained from the fig, banana, or mulberry.ALSO:A detergent consists of a powdered mixture of an alkali and papain. Soiled fabrics of silk, cotton or linen are treated with an aqueous solution in which is dissolved a mixture of papain or bromelin, soap, soda ash and fused sodium sulphide or polysulphide.  Animal enzymes, camphor, attar of roses, dextrin sugar or barytes may be incorporated in the mixture.  The cleansing is effected at 40 to 80 DEG  C., after which the clothes are boiled in water which may contain soap, then rinsed and dried. Specification 414,778, [Group IV], is referred to. The Provisional Specification describes also the use of other vegetable proteases such as those obtained from the fig, banana, or mulberry.
Patent GB-1340259-A (GB)
Title: Electrical inverter
IPC: H02M7/515
Filed: 1971-05-14
Abstract: 1340259 Inverting ALLMANNA SVENSKA ELEKTRISKA AB 14 May 1971 [15 May 1970 16 Dec 1970] 14934/71 Heading H2F In an inverter comprising at least one group of main controlled rectifiers T13, T23, connected in series across a D.C. source U2 commutation is achieved by means of a series oscillatory circuit L1, C connected to the main controlled rectifiers T13, T23 by means of a series connected pair of commutating controlled rectifiers T11, T21 connected across a further D.C. source U3, of higher voltage. As described, reverse diodes D11, D21 are connected to the commutating source U3 whilst reverse thryistors T12, T22 (or diodes, Fig. 2, not shown) are connected to the main source U2. Commutation may be achieved by coupled inductors L1a, L1b as in Specification 1,340,258, or by a single inductor and capacitor (Fig. 2, not shown). The main D.C. source U2 may be adjustable and derived from a three-phase bridge of thryistors (Fig. 2, not shown), the commutating source may comprise a three-phase bridge of diodes, or, as shown in Fig. 4, by adding the outputs of two diode bridges B1, B2 to U2. Reverse thyristor T22 may be triggered at the same time as T11, when turning off T13, but the triggering pulse for T22 must be long enough to be present when T22 is forward biased. The voltage across the commutating capacitor C is limited to U2+U4. Triggering polyphase thyristors.-The various main and commutating thyristors may be triggered from a variable frequency oscillator via a ring counter, delay circuits being included between the triggering circuits of appropriate main and commutating thyristors.
Patent GB-942879-A (GB)
Title: Improvements in or relating to voltage regulating devices
IPC: G05F1/573
Filed: 1961-04-26
Abstract: 942,879. Automatic voltage stabilizers. PHILIPS ELECTRICAL INDUSTRIES Ltd. April 26, 1961 [April 29, 1960], No. 15092/61. Heading G3R. In a voltage stabilizer comprising a series transistor T1 controlled by a second transistor T2 responsive to voltage variations across a load B, a further transistor T4 is provided the emitterbase circuit of which constitutes the diagonal of a resistance bridge between the supply terminals, one branch of the bridge including resistors R4, R2 and the other branch including a resistor R3 and the load B. The arrangement is such that when the load resistance drops below a certain value the transistor T4 conducts to block transistor T1 whereby the circuit is protected against current overload. In a modification (Fig. 2, not shown) a capacitor and a diode are connected in parallel between the positive supply terminal and the base of transistor T4 so that the mean current is lower with overload than in the first embodiment.